Andrew Ooi

Toward More General Turbulence Models via Multicase Computational-Fluid-Dynamics-Driven Training

Yuan Fang, Yaomin Zhao, Fabian Waschkowski, Andrew SH Ooi, Richard D Sandberg

Journal article  |  2023  |  AIAA Journal

The accuracy of machine-learned turbulence models often diminishes when applied to flow cases outside the training data set. In an..

Particle transport in a turbulent pipe flow: direct numerical simulations, phenomenological modelling and physical mechanisms

T Zahtila, L Chan, A Ooi, J Philip

Journal article  |  2023  |  JOURNAL OF FLUID MECHANICS

In particle-laden turbulent wall flows, transport of particles towards solid walls is phenomenologically thought to be governed by..

A systematic study of the grid requirements for a spectral element method solver

T Zahtila, W Lu, L Chan, A Ooi

Journal article  |  2023  |  Computers and Fluids

In this paper, direct numerical simulation of fully developed turbulent channel flow is carried out at low Reynolds number, Reτ=18..

A microfluidic method to investigate platelet mechanotransduction under extensional strain.

Nurul A Zainal Abidin, Mariia Timofeeva, Crispin Szydzik, Farzan Akbaridoust, Chitrarth Lav, Ivan Marusic, Arnan Mitchell, Justin R Hamilton, Andrew SH Ooi, Warwick S Nesbitt

Journal article  |  2023  |  Res Pract Thromb Haemost

BACKGROUND: Blood platelets have evolved a complex mechanotransduction machinery to rapidly respond to hemodynamic conditions. A v..

Vascular remodeling in sheep implanted with endovascular neural interface

Sam E John, Sam Donegan, Theodore C Scordas, Weijie Qi, Prayshita Sharma, Kishan Liyanage, Stefan Wilson, Ian Birchall, Andrew Ooi, Thomas J Oxley, Clive N May, David B Grayden, Nicholas L Opie

Journal article  |  2022  |  JOURNAL OF NEURAL ENGINEERING

Objective.The aim of this work was to assess vascular remodeling after the placement of an endovascular neural interface (ENI) in ..

MRI in CFD for chronic type B aortic dissection: Ready for prime time?

Qingdi Wang, Xiaojing Guo, Mark Brooks, Jason Chuen, Eric KW Poon, Andrew Ooi, Ruth P Lim

Journal article  |  2022  |  Comput Biol Med

OBJECTIVES: Better tools are needed for risk assessment of Type B aortic dissection (TBAD) to determine optimal treatment for pati..

Computational fluid dynamic simulations informed by CT and 4D flow MRI for post-surgery aortic dissection – A case study

Q Wang, X Guo, D Stäb, N Jin, EKW Poon, RP Lim, A Ooi

Journal article  |  2022  |  International Journal of Heat and Fluid Flow

Aortic dissection is a serious pathological condition where tears in the aortic wall allow blood to flow between layers of the aor..

Turbulent flow over a cylinder confined in a channel at Re = 3,900

A Ooi, W Lu, L Chan, Y Cao, J Leontini, A Skvortsov

Journal article  |  2022  |  International Journal of Heat and Fluid Flow

This paper presents data from numerical simulation of the flow over a cylinder confined in a channel at Reynolds number of 3,900. ..

Reynolds-averaged stress and scalar-flux closures via symbolic regression for vertical natural convection

X Xu, ASH Ooi, RD Sandberg

Journal article  |  2022  |  International Journal of Heat and Fluid Flow

Turbulent natural convection is characterised by mutual coupling effects between velocity and thermal fields. This inter-coupling ..

Numerical simulation of the blood flow through the coronary artery stenosis: Effects of varying eccentricity

Mariia Timofeeva, Andrew Ooi, Eric KW Poon, Peter Barlis

Journal article  |  2022  |  COMPUTERS IN BIOLOGY AND MEDICINE

Blockages within arteries, called stenoses, are a common cause of coronary artery disease (CAD). Stenosis is a result of atheroscl..